Move modules that make no sense to be used in other applicaton from libempathy-gtk/ to src/

svn path=/trunk/; revision=789

1 files changed, 977 insertions, 0 deletions

diff --git a/src/ephy-spinner.c b/src/ephy-spinner.c
new file mode 100644
index 000000000..b67b90f76
--- /dev/null
+++ b/src/ephy-spinner.c
@@ -0,0 +1,977 @@
+/* 
+ * Copyright © 2000 Eazel, Inc.
+ * Copyright © 2002-2004 Marco Pesenti Gritti
+ * Copyright © 2004, 2006 Christian Persch
+ *
+ * Nautilus is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Nautilus is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * Author: Andy Hertzfeld <andy@eazel.com>
+ *
+ * Ephy port by Marco Pesenti Gritti <marco@it.gnome.org>
+ * 
+ * $Id: ephy-spinner.c 2114 2006-12-25 12:15:00Z mr $
+ */
+
+#include <config.h>
+
+#include "ephy-spinner.h"
+
+/* #include "ephy-debug.h" */
+#define LOG(msg, args...)
+#define START_PROFILER(name)
+#define STOP_PROFILER(name)
+
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <gtk/gtkicontheme.h>
+#include <gtk/gtkiconfactory.h>
+#include <gtk/gtksettings.h>
+
+/* Spinner cache implementation */
+
+#define EPHY_TYPE_SPINNER_CACHE			(ephy_spinner_cache_get_type())
+#define EPHY_SPINNER_CACHE(object)		(G_TYPE_CHECK_INSTANCE_CAST((object), EPHY_TYPE_SPINNER_CACHE, EphySpinnerCache))
+#define EPHY_SPINNER_CACHE_CLASS(klass) 	(G_TYPE_CHECK_CLASS_CAST((klass), EPHY_TYPE_SPINNER_CACHE, EphySpinnerCacheClass))
+#define EPHY_IS_SPINNER_CACHE(object)		(G_TYPE_CHECK_INSTANCE_TYPE((object), EPHY_TYPE_SPINNER_CACHE))
+#define EPHY_IS_SPINNER_CACHE_CLASS(klass)	(G_TYPE_CHECK_CLASS_TYPE((klass), EPHY_TYPE_SPINNER_CACHE))
+#define EPHY_SPINNER_CACHE_GET_CLASS(obj)	(G_TYPE_INSTANCE_GET_CLASS((obj), EPHY_TYPE_SPINNER_CACHE, EphySpinnerCacheClass))
+
+typedef struct _EphySpinnerCache	EphySpinnerCache;
+typedef struct _EphySpinnerCacheClass	EphySpinnerCacheClass;
+typedef struct _EphySpinnerCachePrivate	EphySpinnerCachePrivate;
+
+struct _EphySpinnerCacheClass
+{
+	GObjectClass parent_class;
+};
+
+struct _EphySpinnerCache
+{
+	GObject parent_object;
+
+	/*< private >*/
+	EphySpinnerCachePrivate *priv;
+};
+
+#define EPHY_SPINNER_CACHE_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EPHY_TYPE_SPINNER_CACHE, EphySpinnerCachePrivate))
+
+struct _EphySpinnerCachePrivate
+{
+	/* Hash table of GdkScreen -> EphySpinnerCacheData */
+	GHashTable *hash;
+};
+
+typedef struct
+{
+	guint ref_count;
+	GtkIconSize size;
+	int width;
+	int height;
+	GdkPixbuf **animation_pixbufs;
+	guint n_animation_pixbufs;
+} EphySpinnerImages;
+
+#define LAST_ICON_SIZE			GTK_ICON_SIZE_DIALOG + 1
+#define SPINNER_ICON_NAME		"process-working"
+#define SPINNER_FALLBACK_ICON_NAME	"gnome-spinner"
+#define EPHY_SPINNER_IMAGES_INVALID	((EphySpinnerImages *) 0x1)
+
+typedef struct
+{
+	GdkScreen *screen;
+	GtkIconTheme *icon_theme;
+	EphySpinnerImages *images[LAST_ICON_SIZE];
+} EphySpinnerCacheData;
+
+static void ephy_spinner_cache_class_init (EphySpinnerCacheClass *klass);
+static void ephy_spinner_cache_init	  (EphySpinnerCache *cache);
+
+static GObjectClass *ephy_spinner_cache_parent_class;
+
+static GType
+ephy_spinner_cache_get_type (void)
+{
+	static GType type = 0;
+
+	if (G_UNLIKELY (type == 0))
+	{
+		const GTypeInfo our_info =
+		{
+			sizeof (EphySpinnerCacheClass),
+			NULL,
+			NULL,
+			(GClassInitFunc) ephy_spinner_cache_class_init,
+			NULL,
+			NULL,
+			sizeof (EphySpinnerCache),
+			0,
+			(GInstanceInitFunc) ephy_spinner_cache_init
+		};
+
+		type = g_type_register_static (G_TYPE_OBJECT,
+					       "EphySpinnerCache",
+					       &our_info, 0);
+	}
+
+	return type;
+}
+
+static EphySpinnerImages *
+ephy_spinner_images_ref (EphySpinnerImages *images)
+{
+	g_return_val_if_fail (images != NULL, NULL);
+
+	images->ref_count++;
+
+	return images;
+}
+
+static void
+ephy_spinner_images_unref (EphySpinnerImages *images)
+{
+	g_return_if_fail (images != NULL);
+
+	images->ref_count--;
+	if (images->ref_count == 0)
+	{
+		guint i;
+
+		LOG ("Freeing spinner images %p for size %d", images, images->size);
+
+		for (i = 0; i < images->n_animation_pixbufs; ++i)
+		{
+			g_object_unref (images->animation_pixbufs[i]);
+		}
+		g_free (images->animation_pixbufs);
+
+		g_free (images);
+	}
+}
+
+static void
+ephy_spinner_cache_data_unload (EphySpinnerCacheData *data)
+{
+	GtkIconSize size;
+	EphySpinnerImages *images;
+
+	g_return_if_fail (data != NULL);
+
+	LOG ("EphySpinnerDataCache unload for screen %p", data->screen);
+
+	for (size = GTK_ICON_SIZE_INVALID; size < LAST_ICON_SIZE; ++size)
+	{
+		images = data->images[size];
+		data->images[size] = NULL;
+
+		if (images != NULL && images != EPHY_SPINNER_IMAGES_INVALID)
+		{
+			ephy_spinner_images_unref (images);
+		}
+	}
+}
+
+static GdkPixbuf *
+extract_frame (GdkPixbuf *grid_pixbuf,
+	       int x,
+	       int y,
+	       int size)
+{
+	GdkPixbuf *pixbuf;
+
+	if (x + size > gdk_pixbuf_get_width (grid_pixbuf) ||
+	    y + size > gdk_pixbuf_get_height (grid_pixbuf))
+	{
+		return NULL;
+	}
+
+	pixbuf = gdk_pixbuf_new_subpixbuf (grid_pixbuf,
+					   x, y,
+					   size, size);
+	g_return_val_if_fail (pixbuf != NULL, NULL);
+
+	return pixbuf;
+}
+
+static GdkPixbuf *
+scale_to_size (GdkPixbuf *pixbuf,
+	       int dw,
+	       int dh)
+{
+	GdkPixbuf *result;
+	int pw, ph;
+
+	g_return_val_if_fail (pixbuf != NULL, NULL);
+
+	pw = gdk_pixbuf_get_width (pixbuf);
+	ph = gdk_pixbuf_get_height (pixbuf);
+
+	if (pw != dw || ph != dh)
+	{
+		result = gdk_pixbuf_scale_simple (pixbuf, dw, dh,
+						  GDK_INTERP_BILINEAR);
+		g_object_unref (pixbuf);
+		return result;
+	}
+
+	return pixbuf;
+}
+
+static EphySpinnerImages *
+ephy_spinner_images_load (GdkScreen *screen,
+			  GtkIconTheme *icon_theme,
+			  GtkIconSize icon_size)
+{
+	EphySpinnerImages *images;
+	GdkPixbuf *icon_pixbuf, *pixbuf;
+	GtkIconInfo *icon_info = NULL;
+	int grid_width, grid_height, x, y, requested_size, size, isw, ish, n;
+	const char *icon;
+	GSList *list = NULL, *l;
+
+	LOG ("EphySpinnerCacheData loading for screen %p at size %d", screen, icon_size);
+
+	START_PROFILER ("loading spinner animation")
+
+	if (!gtk_icon_size_lookup_for_settings (gtk_settings_get_for_screen (screen),
+						icon_size, &isw, &ish)) goto loser;
+
+	requested_size = MAX (ish, isw);
+
+	/* Load the animation. The 'rest icon' is the 0th frame */
+	icon_info = gtk_icon_theme_lookup_icon (icon_theme,
+						SPINNER_ICON_NAME,
+					        requested_size, 0);
+	if (icon_info == NULL)
+	{
+		g_warning ("Throbber animation not found");
+	
+		/* If the icon naming spec compliant name wasn't found, try the old name */
+		icon_info = gtk_icon_theme_lookup_icon (icon_theme,
+							SPINNER_FALLBACK_ICON_NAME,
+							requested_size, 0);
+		if (icon_info == NULL)
+		{
+			g_warning ("Throbber fallback animation not found either");
+			goto loser;
+		}
+	}
+	g_assert (icon_info != NULL);
+
+	size = gtk_icon_info_get_base_size (icon_info);
+	icon = gtk_icon_info_get_filename (icon_info);
+	if (icon == NULL) goto loser;
+
+	icon_pixbuf = gdk_pixbuf_new_from_file (icon, NULL);
+	gtk_icon_info_free (icon_info);
+	icon_info = NULL;
+
+	if (icon_pixbuf == NULL)
+	{
+		g_warning ("Could not load the spinner file");
+		goto loser;
+	}
+
+	grid_width = gdk_pixbuf_get_width (icon_pixbuf);
+	grid_height = gdk_pixbuf_get_height (icon_pixbuf);
+
+	n = 0;
+	for (y = 0; y < grid_height; y += size)
+	{
+		for (x = 0; x < grid_width ; x += size)
+		{
+			pixbuf = extract_frame (icon_pixbuf, x, y, size);
+
+			if (pixbuf)
+			{
+				list = g_slist_prepend (list, pixbuf);
+				++n;
+			}
+			else
+			{
+				g_warning ("Cannot extract frame (%d, %d) from the grid\n", x, y);
+			}
+		}
+	}
+
+	g_object_unref (icon_pixbuf);
+
+	if (list == NULL) goto loser;
+	g_assert (n > 0);
+
+	if (size > requested_size)
+	{
+		for (l = list; l != NULL; l = l->next)
+		{
+			l->data = scale_to_size (l->data, isw, ish);
+		}
+	}
+
+	/* Now we've successfully got all the data */
+	images = g_new (EphySpinnerImages, 1);
+	images->ref_count = 1;
+
+	images->size = icon_size;
+	images->width = images->height = requested_size;
+
+	images->n_animation_pixbufs = n;
+	images->animation_pixbufs = g_new (GdkPixbuf *, n);
+
+	for (l = list; l != NULL; l = l->next)
+	{
+		g_assert (l->data != NULL);
+		images->animation_pixbufs[--n] = l->data;
+	}
+	g_assert (n == 0);
+
+	g_slist_free (list);
+
+	STOP_PROFILER ("loading spinner animation")
+
+	return images;
+
+loser:
+	if (icon_info)
+	{
+		gtk_icon_info_free (icon_info);
+	}
+	g_slist_foreach (list, (GFunc) g_object_unref, NULL);
+
+	STOP_PROFILER ("loading spinner animation")
+
+	return NULL;
+}
+
+static EphySpinnerCacheData *
+ephy_spinner_cache_data_new (GdkScreen *screen)
+{
+	EphySpinnerCacheData *data;
+
+	data = g_new0 (EphySpinnerCacheData, 1);
+
+	data->screen = screen;
+	data->icon_theme = gtk_icon_theme_get_for_screen (screen);
+	g_signal_connect_swapped (data->icon_theme, "changed",
+				  G_CALLBACK (ephy_spinner_cache_data_unload),
+				  data);
+
+	return data;
+}
+
+static void
+ephy_spinner_cache_data_free (EphySpinnerCacheData *data)
+{
+	g_return_if_fail (data != NULL);
+	g_return_if_fail (data->icon_theme != NULL);
+
+	g_signal_handlers_disconnect_by_func
+		(data->icon_theme,
+		 G_CALLBACK (ephy_spinner_cache_data_unload), data);
+
+	ephy_spinner_cache_data_unload (data);
+
+	g_free (data);
+}
+
+static EphySpinnerImages *
+ephy_spinner_cache_get_images (EphySpinnerCache *cache,
+			       GdkScreen *screen,
+			       GtkIconSize icon_size)
+{
+	EphySpinnerCachePrivate *priv = cache->priv;
+	EphySpinnerCacheData *data;
+	EphySpinnerImages *images;
+
+	LOG ("Getting animation images for screen %p at size %d", screen, icon_size);
+
+	g_return_val_if_fail (icon_size >= 0 && icon_size < LAST_ICON_SIZE, NULL);
+
+	/* Backward compat: "invalid" meant "native" size which doesn't exist anymore */
+	if (icon_size == GTK_ICON_SIZE_INVALID)
+	{
+		icon_size = GTK_ICON_SIZE_DIALOG;
+	}
+
+	data = g_hash_table_lookup (priv->hash, screen);
+	if (data == NULL)
+	{
+		data = ephy_spinner_cache_data_new (screen);
+		/* FIXME: think about what happens when the screen's display is closed later on */
+		g_hash_table_insert (priv->hash, screen, data);
+	}
+
+	images = data->images[icon_size];
+	if (images == EPHY_SPINNER_IMAGES_INVALID)
+	{
+		/* Load failed, but don't try endlessly again! */
+		return NULL;
+	}
+
+	if (images != NULL)
+	{
+		/* Return cached data */
+		return ephy_spinner_images_ref (images);
+	}
+
+	images = ephy_spinner_images_load (screen, data->icon_theme, icon_size);
+
+	if (images == NULL)
+	{
+		/* Mark as failed-to-load */
+		data->images[icon_size] = EPHY_SPINNER_IMAGES_INVALID;
+
+		return NULL;
+	}
+
+	data->images[icon_size] = images;
+
+	return ephy_spinner_images_ref (images);
+}
+
+static void
+ephy_spinner_cache_init (EphySpinnerCache *cache)
+{
+	EphySpinnerCachePrivate *priv;
+
+	priv = cache->priv = EPHY_SPINNER_CACHE_GET_PRIVATE (cache);
+
+	LOG ("EphySpinnerCache initialising");
+
+	priv->hash = g_hash_table_new_full (g_direct_hash, g_direct_equal,
+					    NULL,
+					    (GDestroyNotify) ephy_spinner_cache_data_free);
+}
+
+static void
+ephy_spinner_cache_finalize (GObject *object)
+{
+	EphySpinnerCache *cache = EPHY_SPINNER_CACHE (object); 
+	EphySpinnerCachePrivate *priv = cache->priv;
+
+	g_hash_table_destroy (priv->hash);
+
+	LOG ("EphySpinnerCache finalised");
+
+	G_OBJECT_CLASS (ephy_spinner_cache_parent_class)->finalize (object);
+}
+
+static void
+ephy_spinner_cache_class_init (EphySpinnerCacheClass *klass)
+{
+	GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+	ephy_spinner_cache_parent_class = g_type_class_peek_parent (klass);
+
+	object_class->finalize = ephy_spinner_cache_finalize;
+
+	g_type_class_add_private (object_class, sizeof (EphySpinnerCachePrivate));
+}
+
+static EphySpinnerCache *spinner_cache = NULL;
+
+static EphySpinnerCache *
+ephy_spinner_cache_ref (void)
+{
+	if (spinner_cache == NULL)
+	{
+		EphySpinnerCache **cache_ptr;
+
+		spinner_cache = g_object_new (EPHY_TYPE_SPINNER_CACHE, NULL);
+		cache_ptr = &spinner_cache;
+		g_object_add_weak_pointer (G_OBJECT (spinner_cache),
+					   (gpointer *) cache_ptr);
+
+		return spinner_cache;
+	}
+		
+	return g_object_ref (spinner_cache);
+}
+
+/* Spinner implementation */
+
+#define SPINNER_TIMEOUT 125 /* ms */
+
+#define EPHY_SPINNER_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EPHY_TYPE_SPINNER, EphySpinnerDetails))
+
+struct _EphySpinnerDetails
+{
+	GtkIconTheme *icon_theme;
+	EphySpinnerCache *cache;
+	GtkIconSize size;
+	EphySpinnerImages *images;
+	guint current_image;
+	guint timeout;
+	guint timer_task;
+	guint spinning : 1;
+	guint need_load : 1;
+};
+
+static void ephy_spinner_class_init (EphySpinnerClass *class);
+static void ephy_spinner_init	    (EphySpinner *spinner);
+
+static GObjectClass *parent_class;
+
+GType
+ephy_spinner_get_type (void)
+{
+	static GType type = 0;
+
+	if (G_UNLIKELY (type == 0))
+	{
+		const GTypeInfo our_info =
+		{
+			sizeof (EphySpinnerClass),
+			NULL, /* base_init */
+			NULL, /* base_finalize */
+			(GClassInitFunc) ephy_spinner_class_init,
+			NULL,
+			NULL, /* class_data */
+			sizeof (EphySpinner),
+			0, /* n_preallocs */
+			(GInstanceInitFunc) ephy_spinner_init
+		};
+
+		type = g_type_register_static (GTK_TYPE_WIDGET,
+					       "EphySpinner",
+					       &our_info, 0);
+	}
+
+	return type;
+}
+
+static gboolean
+ephy_spinner_load_images (EphySpinner *spinner)
+{
+	EphySpinnerDetails *details = spinner->details;
+
+	if (details->need_load)
+	{
+		START_PROFILER ("ephy_spinner_load_images")
+
+		details->images =
+			ephy_spinner_cache_get_images
+				(details->cache,
+				 gtk_widget_get_screen (GTK_WIDGET (spinner)),
+				 details->size);
+
+		STOP_PROFILER ("ephy_spinner_load_images")
+
+		details->current_image = 0; /* 'rest' icon */
+		details->need_load = FALSE;
+	}
+
+	return details->images != NULL;
+}
+
+static void
+ephy_spinner_unload_images (EphySpinner *spinner)
+{
+	EphySpinnerDetails *details = spinner->details;
+
+	if (details->images != NULL)
+	{
+		ephy_spinner_images_unref (details->images);
+		details->images = NULL;
+	}
+
+	details->current_image = 0;
+	details->need_load = TRUE;
+}
+
+static void
+icon_theme_changed_cb (GtkIconTheme *icon_theme,
+		       EphySpinner *spinner)
+{
+	ephy_spinner_unload_images (spinner);
+	gtk_widget_queue_resize (GTK_WIDGET (spinner));
+}
+
+static void
+ephy_spinner_init (EphySpinner *spinner)
+{
+	EphySpinnerDetails *details;
+
+	details = spinner->details = EPHY_SPINNER_GET_PRIVATE (spinner);
+
+	GTK_WIDGET_SET_FLAGS (GTK_WIDGET (spinner), GTK_NO_WINDOW);
+
+	details->cache = ephy_spinner_cache_ref ();
+	details->size = GTK_ICON_SIZE_DIALOG;
+	details->spinning = FALSE;
+	details->timeout = SPINNER_TIMEOUT;
+	details->need_load = TRUE;
+}
+
+static int
+ephy_spinner_expose (GtkWidget *widget,
+		     GdkEventExpose *event)
+{
+	EphySpinner *spinner = EPHY_SPINNER (widget);
+	EphySpinnerDetails *details = spinner->details;
+	EphySpinnerImages *images;
+	GdkPixbuf *pixbuf;
+	GdkGC *gc;
+	int x_offset, y_offset, width, height;
+	GdkRectangle pix_area, dest;
+
+	if (!GTK_WIDGET_DRAWABLE (spinner))
+	{
+		return FALSE;
+	}
+
+	if (details->need_load &&
+	    !ephy_spinner_load_images (spinner))
+	{
+		return FALSE;
+	}
+
+	images = details->images;
+	if (images == NULL)
+	{
+		return FALSE;
+	}
+
+	/* Otherwise |images| will be NULL anyway */
+	g_assert (images->n_animation_pixbufs > 0);
+		
+	g_assert (details->current_image >= 0 &&
+		  details->current_image < images->n_animation_pixbufs);
+
+	pixbuf = images->animation_pixbufs[details->current_image];
+
+	g_assert (pixbuf != NULL);
+
+	width = gdk_pixbuf_get_width (pixbuf);
+	height = gdk_pixbuf_get_height (pixbuf);
+
+	/* Compute the offsets for the image centered on our allocation */
+	x_offset = (widget->allocation.width - width) / 2;
+	y_offset = (widget->allocation.height - height) / 2;
+
+	pix_area.x = x_offset + widget->allocation.x;
+	pix_area.y = y_offset + widget->allocation.y;
+	pix_area.width = width;
+	pix_area.height = height;
+
+	if (!gdk_rectangle_intersect (&event->area, &pix_area, &dest))
+	{
+		return FALSE;
+	}
+
+	gc = gdk_gc_new (widget->window);
+	gdk_draw_pixbuf (widget->window, gc, pixbuf,
+			 dest.x - x_offset - widget->allocation.x,
+			 dest.y - y_offset - widget->allocation.y,
+			 dest.x, dest.y,
+			 dest.width, dest.height,
+			 GDK_RGB_DITHER_MAX, 0, 0);
+	g_object_unref (gc);
+
+	return FALSE;
+}
+
+static gboolean
+bump_spinner_frame_cb (EphySpinner *spinner)
+{
+	EphySpinnerDetails *details = spinner->details;
+
+	/* This can happen when we've unloaded the images on a theme
+	 * change, but haven't been in the queued size request yet.
+	 * Just skip this update.
+	 */
+	if (details->images == NULL) return TRUE;
+
+	details->current_image++;
+	if (details->current_image >= details->images->n_animation_pixbufs)
+	{
+		/* the 0th frame is the 'rest' icon */
+		details->current_image = MIN (1, details->images->n_animation_pixbufs);
+	}
+
+	gtk_widget_queue_draw (GTK_WIDGET (spinner));
+
+	/* run again */
+	return TRUE;
+}
+
+/**
+ * ephy_spinner_start:
+ * @spinner: a #EphySpinner
+ *
+ * Start the spinner animation.
+ **/
+void
+ephy_spinner_start (EphySpinner *spinner)
+{
+	EphySpinnerDetails *details = spinner->details;
+
+	details->spinning = TRUE;
+
+	if (GTK_WIDGET_MAPPED (GTK_WIDGET (spinner)) &&
+	    details->timer_task == 0 &&
+	    ephy_spinner_load_images (spinner))
+	{
+		/* the 0th frame is the 'rest' icon */
+		details->current_image = MIN (1, details->images->n_animation_pixbufs);
+
+		details->timer_task =
+			g_timeout_add_full (G_PRIORITY_LOW,
+			                    details->timeout,
+				            (GSourceFunc) bump_spinner_frame_cb,
+				            spinner,
+				            NULL);
+	}
+}
+
+static void
+ephy_spinner_remove_update_callback (EphySpinner *spinner)
+{
+	EphySpinnerDetails *details = spinner->details;
+
+	if (details->timer_task != 0)
+	{
+		g_source_remove (details->timer_task);
+		details->timer_task = 0;
+	}
+}
+
+/**
+ * ephy_spinner_stop:
+ * @spinner: a #EphySpinner
+ *
+ * Stop the spinner animation.
+ **/
+void
+ephy_spinner_stop (EphySpinner *spinner)
+{
+	EphySpinnerDetails *details = spinner->details;
+
+	details->spinning = FALSE;
+	details->current_image = 0;
+
+	if (details->timer_task != 0)
+	{
+		ephy_spinner_remove_update_callback (spinner);
+
+		if (GTK_WIDGET_MAPPED (GTK_WIDGET (spinner)))
+		{
+			gtk_widget_queue_draw (GTK_WIDGET (spinner));
+		}
+	}
+}
+
+/*
+ * ephy_spinner_set_size:
+ * @spinner: a #EphySpinner
+ * @size: the size of type %GtkIconSize
+ *
+ * Set the size of the spinner.
+ **/
+void
+ephy_spinner_set_size (EphySpinner *spinner,
+		       GtkIconSize size)
+{
+	if (size == GTK_ICON_SIZE_INVALID)
+	{
+		size = GTK_ICON_SIZE_DIALOG;
+	}
+
+	if (size != spinner->details->size)
+	{
+		ephy_spinner_unload_images (spinner);
+
+		spinner->details->size = size;
+
+		gtk_widget_queue_resize (GTK_WIDGET (spinner));
+	}
+}
+
+#if 0
+/*
+ * ephy_spinner_set_timeout:
+ * @spinner: a #EphySpinner
+ * @timeout: time delay between updates to the spinner.
+ *
+ * Sets the timeout delay for spinner updates.
+ **/
+void
+ephy_spinner_set_timeout (EphySpinner *spinner,
+			  guint timeout)
+{
+	EphySpinnerDetails *details = spinner->details;
+
+	if (timeout != details->timeout)
+	{
+		ephy_spinner_stop (spinner);
+
+		details->timeout = timeout;
+
+		if (details->spinning)
+		{
+			ephy_spinner_start (spinner);
+		}
+	}
+}
+#endif
+
+static void
+ephy_spinner_size_request (GtkWidget *widget,
+			   GtkRequisition *requisition)
+{
+	EphySpinner *spinner = EPHY_SPINNER (widget);
+	EphySpinnerDetails *details = spinner->details;
+
+	if ((details->need_load &&
+	     !ephy_spinner_load_images (spinner)) ||
+            details->images == NULL)
+	{
+		requisition->width = requisition->height = 0;
+		gtk_icon_size_lookup_for_settings (gtk_widget_get_settings (widget),
+						   details->size,
+						   &requisition->width,
+					           &requisition->height);
+		return;
+	}
+
+	requisition->width = details->images->width;
+	requisition->height = details->images->height;
+
+	/* FIXME fix this hack */
+	/* allocate some extra margin so we don't butt up against toolbar edges */
+	if (details->size != GTK_ICON_SIZE_MENU)
+	{
+		requisition->width += 2;
+		requisition->height += 2;
+	}
+}
+
+static void
+ephy_spinner_map (GtkWidget *widget)
+{
+	EphySpinner *spinner = EPHY_SPINNER (widget);
+	EphySpinnerDetails *details = spinner->details;
+
+	GTK_WIDGET_CLASS (parent_class)->map (widget);
+
+	if (details->spinning)
+	{
+		ephy_spinner_start (spinner);
+	}
+}
+
+static void
+ephy_spinner_unmap (GtkWidget *widget)
+{
+	EphySpinner *spinner = EPHY_SPINNER (widget);
+
+	ephy_spinner_remove_update_callback (spinner);
+
+	GTK_WIDGET_CLASS (parent_class)->unmap (widget);
+}
+
+static void
+ephy_spinner_dispose (GObject *object)
+{
+	EphySpinner *spinner = EPHY_SPINNER (object);
+
+	g_signal_handlers_disconnect_by_func
+			(spinner->details->icon_theme,
+		 G_CALLBACK (icon_theme_changed_cb), spinner);
+
+	G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+ephy_spinner_finalize (GObject *object)
+{
+	EphySpinner *spinner = EPHY_SPINNER (object);
+
+	ephy_spinner_remove_update_callback (spinner);
+	ephy_spinner_unload_images (spinner);
+
+	g_object_unref (spinner->details->cache);
+
+	G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+ephy_spinner_screen_changed (GtkWidget *widget,
+			     GdkScreen *old_screen)
+{
+	EphySpinner *spinner = EPHY_SPINNER (widget);
+	EphySpinnerDetails *details = spinner->details;
+	GdkScreen *screen;
+
+	if (GTK_WIDGET_CLASS (parent_class)->screen_changed)
+	{
+		GTK_WIDGET_CLASS (parent_class)->screen_changed (widget, old_screen);
+	}
+
+	screen = gtk_widget_get_screen (widget);
+
+	/* FIXME: this seems to be happening when then spinner is destroyed!? */
+	if (old_screen == screen) return;
+
+	/* We'll get mapped again on the new screen, but not unmapped from
+	 * the old screen, so remove timeout here.
+	 */
+	ephy_spinner_remove_update_callback (spinner);
+
+	ephy_spinner_unload_images (spinner);
+
+	if (old_screen != NULL)
+	{
+		g_signal_handlers_disconnect_by_func
+			(gtk_icon_theme_get_for_screen (old_screen),
+			 G_CALLBACK (icon_theme_changed_cb), spinner);
+	}
+
+	details->icon_theme = gtk_icon_theme_get_for_screen (screen);
+	g_signal_connect (details->icon_theme, "changed",
+			  G_CALLBACK (icon_theme_changed_cb), spinner);
+}
+
+static void
+ephy_spinner_class_init (EphySpinnerClass *class)
+{
+	GObjectClass *object_class =  G_OBJECT_CLASS (class);
+	GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
+
+	parent_class = g_type_class_peek_parent (class);
+
+	object_class->dispose = ephy_spinner_dispose;
+	object_class->finalize = ephy_spinner_finalize;
+
+	widget_class->expose_event = ephy_spinner_expose;
+	widget_class->size_request = ephy_spinner_size_request;
+	widget_class->map = ephy_spinner_map;
+	widget_class->unmap = ephy_spinner_unmap;
+	widget_class->screen_changed = ephy_spinner_screen_changed;
+
+	g_type_class_add_private (object_class, sizeof (EphySpinnerDetails));
+}
+
+/*
+ * ephy_spinner_new:
+ *
+ * Create a new #EphySpinner. The spinner is a widget
+ * that gives the user feedback about network status with
+ * an animated image.
+ *
+ * Return Value: the spinner #GtkWidget
+ **/
+GtkWidget *
+ephy_spinner_new (void)
+{
+	return GTK_WIDGET (g_object_new (EPHY_TYPE_SPINNER, NULL));
+}